Boiler-cleaning device.



E. D. McLEAN.

BOILER CLEANING DEVICE.

APPLICATION man JULY 19, 1915.

1,1 58,948, Patented Nov. 2, 1915.

ay waif 6'.

COLUMBIA PLANDGRAPH c0" WASHINGTON D c EDWIN D. McLEA N; or manissa,LLrlvo'rs.

BOILER-CLEANING DEVICE.

Specification of Letters Patent.

Application filed July 19, 1915;. Serial No. 40,653.

To all whom it may concern: y I

Be it known that I, Epwm D. MGLEAN, a citizen of the United StatesofAmerica, a resident of Marissa,. in the county of St. Clair, State of,Illinois, have invented certain new and useful Improvementsin Boiler-Gleaning Devices, of which the following is a full, clear, and exactdescription,,referencevbeing had to the accompanying drawings, forming apart of this specification.

Myinvention relates to a device for cleaning the interior surfaces ofsteam boilers, the invention hating for itsobject to provide a simpleandeliicient means in whicha hose nozzle; extending into the boiler, isadjust. ably fitted to provide for longitudinal and rotative movement ofthe nozzle inflorder that a stream of water may be directed against allportions of the inner wall ofthe boiler shell and the exterior surfaceof the boiler tubes; the said means serving to main tain' the hosenozzle firmly in adjusted position-sin consequence ofthe force of waterdelivered through the hose nozzle.

a fllze salient features of merit in my boiler cleaning device are theconstruction and arrangement of parts providing for theefficientoperation of the device from the exterior of a boiler, and the provisionof means whereby the operator can determine and regulate the directionof discharge of the stream from the hose nozzle in applying such streamto the various surfaces to be ean Figure I is a longitudinal section of.a portion of a steam boiler with my cleaning device applied thereto, thecleaning device being shown partly in elevation and partly insection.Fig. II is a view similar to Fig. I showing the cleaning elementsmounted upon and in the boiler as they appear when the cleaning deviceis not in service. Fig. III is an enlarged top view of the cleaningdevice and fragments of the boiler, the

hose connection'being shown in cross section taken on line III-III, Fig.I.

In the drawings: A designates the shell of a steam boiler and B thetubes within said shell. A hole is formed in the boiler shell A,preferably at or near the longitudinal center of the space occupied bythe tubes B, and an internally threaded boss 1 is secured to the shellat the location of this hole.

2 designates a tubular column the lower portion of which is threaded andextends through said boss 1, preferably to such degree that the columnis located partly ex-.

terio-r of the boiler shell and partly interior thereof as 3 shown inthe drawings. column 2 has an enlarged cup shaped upper end member 3provided with an internal screw thread 4.

5 designates a nozzle slidably and rotatably fitted in the tubularcolumn 2. This nozzle has a curved spout 6, and is preferablyofsufficient length to reacl from the upper or outer end ofthecolumn 2to-a point near, the portion of the wall of the boiler shelldiametrically opposite to and farthest from the portion of the shell towhich the column 2 is attached. The said nozzle is of such material andstrength that it will resist the lateral strain exerted on it by thewater passing through the nozzle andcurved at its spout 6. The nozzle 5is provided at its upper or outer end with a screw thread to provide forthe application of a hose connection thereto. I

7 designates a'hose through which water,

PatentedNo'v. 2, 1915.

held from movement thereon by a set screw 13. I The handle has conjoinedto it a pointer 12 and said handle isintended to be so secured to thenozzle that the pointer will extend inthe same direction as the spout ofthe nozzle to thereby indicate the direction in :which a stream of wateris discharged from the nozzleg this being important owing to the spoutof the nozzle being hidden from- View within the boiler;

The operation of my boiler cleanin g device is as follows: Water underpressure is delivered from the hose 7 into the nozzle 5 and escapesthrough the curved spout in a stream of sufficient force to dislodgesediment and loose scale from any surface in the boiler against whichthe stream is directed, the efficiency of the cleaning action beinglimited only accordingto the degree of pressure against the water.During the operation of the device the nozzle 5 is held the force ofthe, water escaping from the nozzle pressing the nozzlelaterally in thetubular column 2, with resultant binding action between these parts. Thenozzle, therefore, remains fixed until it is readjusted.

J In using the device theoperator grasps the handle 11 attached tothe,nozzle and preferably moves the nozzle to position its spout abovethe tubes within the boilershell; He then turns the nozzle from sidetoside or in a complete circle, thereby causing the stream of-waterescaping from the-nozzle to clean the upperportion of the boiler shellat the sides and ends and the top surfaces of the uppermost tubes. Thenozzle is then turned so that the pointer 12 is directed longitudinallyof the boiler and'moved down wardly between the central rows of tubes.The operator exertsa turnin'g'strain-upon the handle as he moves thenozzle downwardly and therefore turns the spout of the .nozzle betweenthe topmost tubes and those in the next lowermost row as soon as thespout has passed beneath the former. The pointer will then' indicatethat the nozzle spout is directed laterally and upon turning the nozzleto and fro or in a complete circle the tubes above and below the nozzlespout and the portions of the shell wall I the scale and sediment are'ina soft condition so that they may be more easily separated from thesurfaces to which they are adher'ed. The sediment and scale may bereadily removed from the boiler by uncovering the lower manhole byremoval of the'lower manhead of the boiler.

lVhen the operation of my device is completed the hose-connections areseparated from the nozzle 5, the locknut 10 is also removed, the handle11 is taken from the noz- Copies of this patent may be'obtained for tosupport the .nozzle suspended in the boiler. The cap 14 is thenappliedtothe upit per; end of thecolumn'Q and forms a steam tight closuretherefor. V

While Ihave described my device as used 7 in cleaning steam boilershaving tubes there in, it "is'iobvious that it may be usedalslo' for.'13

cleaning other 1 kinds of tanks. 7

I claim steam, boilers or 1. The combination with a steamj boile r. ishell, of a tubular member secured to said and longitudinally insaidtubular member shell, and a nozzle movable both rotatably 2. Thecombination with a steam boiler shell, of aftubular member secured tosaid shell, and a nozzle movable both rotatably shell, of a tubularmember secured to'said shell, and a nozzle rotatableand slidable 5.;

longitudinallyin said tubular member, the said nozzle having a: curvedspout, and

means associated with said nozzle exteriorly of said boiler shell foradjusting said nozzle.

4. The combination with a steam boilerf g shell, of a tubular membersecured to said shell, and a nozzle slidably androtatably;

arranged in said tubular member, the said-j" I nozzle having a curvedspout, means' -as'sociated with said nozzle exteriorlyof said boilershell foradjusting said nozzle, and

means carried by said nozzle forfindicating thedirection in whichastreamis discharged r r "1 901, 5. The combination with a steamfboilerfrom said spout.

shell, of a' tubular member secured 5 to '7 said shell, and a nozzleslidably and rotatabl yar; ranged in said tubular member, the said.-

nozzle having a curvedspout, means assoe ciated with said nozzle'ex'teriorly of said boiler shell for adjusting said nozzle, andiahandle secured to said nozzle exteriorly of said. boiler shell, the saidhandle being pro vided with a pointer for indicating the di:

rection in which a stream is discharged from said spout.

' Commissioner of ,iatents,

EDWIN D. MCLEAN. five cents each,"by addressing the Washington, D. G.

